Notre-Dame de Reims, known in English as Reims Cathedral, is a Roman Catholic cathedral in the French city of the same name, the archiepiscopal see of the Archdiocese of Reims. The cathedral was dedicated to the Virgin Mary and was the traditional location for the coronation of the kings of France. Reims Cathedral is considered to be one of the most important pieces of Gothic architecture. The cathedral, a major tourist destination, receives about one million visitors annually. It became a UNESCO World Heritage Site in 1991.

Robert II, called the Pious or the Wise, was King of the Franks from 996 to 1031, the second from the Capetian dynasty. Crowned Junior King in 987, he assisted his father on military matters. His solid education, provided by Gerbert of Aurillac in Reims, allowed him to deal with religious questions of which he quickly became the guarantor. Continuing the political work of his father, after becoming sole ruler in 996, he managed to maintain the alliance with the Duchy of Normandy and the County of Anjou and thus was able to contain the ambitions of Count Odo II of Blois.